(workflow) add simple harness workflow for manual testing

cmd/worker/main.go

@@ -1,5 +1,60 @@
 package main
 
+import (
+	"fmt"
+	"log"
+
+	"go.temporal.io/sdk/client"
+	"go.temporal.io/sdk/worker"
+	"github.com/rockliang/poimen/workflows/action"
+	"github.com/rockliang/poimen/workflows/internal/config"
+	"github.com/rockliang/poimen/workflows/statemachine"
+)
+
 func main() {
-	// Empty stub - will be filled in T0.8
+	// Load configuration
+	cfg, err := config.LoadConfig()
+	if err != nil {
+		log.Fatalf("failed to load config: %v", err)
+	}
+
+	// Connect to Temporal
+	c, err := client.Dial(client.Options{
+		HostPort:  cfg.Temporal.HostPort,
+		Namespace: cfg.Temporal.Namespace,
+	})
+	if err != nil {
+		log.Fatalf("failed to connect to temporal: %v", err)
+	}
+	defer c.Close()
+
+	// Create worker
+	w := worker.New(c, "default", worker.Options{})
+	if w == nil {
+		log.Fatalf("failed to create worker")
+	}
+
+	// Register all workflows
+	w.RegisterWorkflow(statemachine.OrchestratorWorkflow)
+	w.RegisterWorkflow(statemachine.TaskUnitWorkflow)
+
+	// Register all activities
+	w.RegisterActivity(action.CloneRepoActivity)
+	w.RegisterActivity(action.GitWorktreeAddActivity)
+	w.RegisterActivity(action.GitCommitActivity)
+	w.RegisterActivity(action.GitPushActivity)
+	w.RegisterActivity(action.GitSquashMergeActivity)
+	w.RegisterActivity(action.PrepareSkillsActivity)
+	w.RegisterActivity(action.PlanningActivity)
+	w.RegisterActivity(action.ImplementerActivity)
+	w.RegisterActivity(action.JudgeActivity)
+	// Note: RunIntegrationTestActivity and lessons activities will be registered when fully implemented
+	// w.RegisterActivity(action.UpdateLessonsActivity)
+	// w.RegisterActivity(action.ReadLessonsActivity)
+
+	// Run worker
+	fmt.Println("Starting worker on queue 'default'...")
+	if err := w.Run(worker.InterruptCh()); err != nil {
+		log.Fatalf("worker failed: %v", err)
+	}
 }